Orrua - surf spot statistics

Best Surf Season (October - March)

The North Atlantic roars to life during autumn and winter, unleashing a consistent barrage of powerful, long-period swell that slams into Orrua’s north-facing shoreline. From October through March, average wave heights range from 1.6m to 2.1m, with periods often exceeding 11 seconds—pumping, firing conditions when it all lines up. The key is the wind: synoptic-scale low-pressure systems tracking across the Bay of Biscay drag in offshore SSE to SSW breezes, giving you clean, groomed faces. With ideal wind percentages peaking at 45-46% in October and December, this is your window for world-class barrels and rippable walls. The NAO index often shifts negative, steering storms southward and fueling the Atlantic conveyor belt. When a deep low stalls west of Ireland, expect northwest-to-northwest swell trains to march in with 12-14 second intervals and 1.5-2.5m heights—absolute gold for Orrua.

Fair Surf Season (April, May & September)

As winter’s fury fades, the transition months offer a mixed bag of fun-sized waves and lighter crowds. April and May see average swell heights drop to 1.2-1.5m and periods settle into the 9-11 second range—still punchy enough for a grovel session on a shortboard or fish. Wind patterns become more variable; the percentage of ideal offshore winds (SSE to SSW) falls to 30-33%. However, the swell direction remains dominated by NW and WNW, which are optimal for the spot. In September, the Atlantic reawakens with early-season storm pulses, pushing average heights back up to 1.3m and periods to 10.4s. You’ll find plenty of rideable, clean waves if you pick your days—especially when a high-pressure ridge to the west combines with a trough over Spain to funnel in light southerlies.

Low Surf Season (June - August)

Summer at Orrua is a test of patience. The Azores High ridges in, suppressing storm activity across the North Atlantic and shrinking average wave heights to a mere 1.0m, with periods barely scraping 9 seconds. The swell is overwhelmingly from the NW, but it’s weak and often messy. Even worse, the wind regime flips: thermal gradients drive persistent onshore breezes from the N, NNE, and NNW, which are directly onshore for this north-facing beach. Ideal offshore wind percentages bottom out at 19-23%. Most days you’ll face choppy, waist-high whitewash—good for a beginner’s lesson or a foil session, but forget about any real power. A rare tropical storm or late-season depression can salvage a few days, but climatologically, this is the low season.

January: Peak Winter Power

The heart of winter delivers the goods at Orrua. Average swell height sits at a solid 2.1m with a 12.7s period, meaning long, powerful lines unloading on the beach. The swell direction is almost entirely from the NW (28.3%) and WNW (25.8%), which are prime angles for this north-facing setup. Wave heights in the 2-2.5m range make up nearly 15% of the total—‘pumping’ territory. Critically, the wind is offshore (SSE to SSW) 43% of the time, driven by frequent low-pressure systems swinging into the Bay of Biscay. The S and SSW winds alone account for over 30% of all wind observations. When those cold fronts clear, you get glassy, groomed conditions with waves holding their shape. This is charging season—bring your step-up.